GRATING

• (noun) optical device consisting of a surface with many parallel grooves in it; disperses a beam of light (or other electromagnetic radiation) into its wavelengths to produce its spectrum

  synonyms : diffraction grating

• (noun) a frame of iron bars to hold a fire

  synonyms : grate

• (noun) a barrier that has parallel or crossed bars blocking a passage but admitting air

  synonyms : grate

• (adj.) unpleasantly harsh or grating in sound

  "a gravelly voice"

  synonyms : gravelly , rasping , raspy , rough , scratchy

WordNet® 3.0, © 2006 by Princeton University.

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